In keeping with Mexican Independence Day tradition, Mayweather Promotions has assembled a stellar undercard featuring some of this era’s most exciting boxers to co-feature on “MAYHEM: Mayweather vs. Maidana 2” on Saturday, September 13 from the MGM Grand Garden Arena live on SHOWTIME PPV.

Featured on the four-fight pay-per-view telecast, fan favorite Leo “Terremoto”

Santa Cruz will put his WBC Super Bantamweight World Championship on the line in a 12-round championship bout against Mexican contender Manuel “Suavecito” Roman, plus Tijuana-Baja’s pride Miguel “Títere” Vazquez defends his IBF Lightweight World Championship against Mayweather Promotions’ rising star Mickey “The Spirit” Bey. In the opening bout on pay per view, Alfredo “El Perro” Angulo returns to the ring against James De La Rosa in a 10-round bout.

Rounding out a sensational night of televised fights, SHOWTIME will present a live 10-round Jr. welterweight bout between John Molina Jr. and Humberto "La Zorrita"

“This is my second time fighting on a Floyd Mayweather pay-per-view undercard and I know that there is no bigger stage than this,” said Santa Cruz. “Manuel Roman is a tough customer. I know he’s going to come prepared and try to take my title. He has nothing to lose and everything to gain, but I plan on leaving the ring with my hand raised.”

“Leo Santa Cruz is one of the top guys not only in the bantamweight division, but in all of boxing,” said Roman. “I’ve never been intimidated in the ring before and I don’t plan on starting on September 13. Santa Cruz better be ready because I know I will be.”

“I’m looking forward to fighting at MGM Grand again and on this amazing Floyd Mayweather card,” said Vazquez. “It’s time to get to business and get in the best shape ever so I’m ready to put on a show. I respect Mickey Bey, but I plan on winning convincingly to show that I’m one of the best in the lightweight division.

“I want to thank God for helping me persevere through the tough times and helping me overcome obstacles in my life,” said Bey. “I also want to thank my team for believing in me and helping me get to this opportunity. I plan on seizing the moment and becoming a world champion on September 13.”

“I’ve been anxious to get back in the ring ever since the end of the Canelo fight,” said Angulo. “I’m ready to get back on the winning track and this is a great opportunity for me to do that in front of the world on Mexican Independence Day weekend. This fight could not be more critical for my future in this sport and I want to put on a great show for the fans.”

“This is a tremendous opportunity for me to make my name on a huge stage against a fellow Mexican-warrior in Alfredo Angulo,” said De La Rosa. “On September 13 I’m going to teach an old dog some new tricks.”

“Floyd always wants to ensure the paying fans get their monies worth by delivering a strong night of boxing action through compelling televised undercard bouts,” said Leonard Ellerbe, CEO Mayweather Promotions. “This fight night will be no different from the rest as Leo Santa Cruz and Miguel Vazquez will defend their world titles valiantly, electrifying Mickey Bey will seek to win that title from Vazquez and fan favorite Alfredo Angulo will look to revitalize his career in what will amount to a sensational night of boxing.”

“From top to bottom, the September 13th fight card is going to get fans out of their seats whether they are among the thousands in attendance at MGM Grand or hundreds of thousands watching from home," said Oscar De La Hoya, president and founder of Golden Boy Promotions. "Golden Boy is proud to promote the most crowd-pleasing fighters in the sport and with Marcos Maidana, Leo Santa Cruz and Alfredo Angulo, all in action under the same roof, it's sure to be a night that no one will forget."

One of the most successful and exciting fighters in the sport, Leo Santa Cruz (27-0-1, 15 KOs) is on the cusp of superstardom. Widely recognized as one of the highest volume punchers in the game, the 25-year-old, two-division world champion who fights out of Los Angeles by way of Huetamo, Michoacan de Ocampo, Mexico will be making his third defense of the WBC 122-pound title he won last August. His exciting work rate and significant power have made Santa Cruz a mainstay on SHOWTIME as he prepares for his second consecutive PPV bout after defeating Cristian Mijares in March on the “TOE TO TOE: Canelo Alvarez vs. Alfredo Angulo” PPV card.

Tijuana-Baja, Mexico native fighting out of Paramount, Calif., Manuel Roman (17-2, 6 KOs) is ready for the spotlight. The hard-hitting 26-year-old is coming off of a two-fight winning streak. An underdog ready to upset bantamweight favorite on the biggest stage of his career could pull off the upset of the year.

A respected veteran and the current IBF Lightweight World Champion, Miguel Vazquez (34-3, 13 KOs) looks to make himself a household name on September 13 when he puts his title on the line against Mickey Bey. The 27-year-old from Guadalajara, Jalisco, Mexico is riding an impressive 13-fight win streak dating all the way back to a 2008 loss against Canelo Alvarez. Vazquez won his lightweight world title in 2010 against Ji-Hoon Kim and has gone on to defeat undefeated fighters Leonardo Zappavigna, Mercito Gesta and, most recently, Denis Shafikov this past Feb. 22.

His opponent, Mickey Bey (20-1-1, 10 KOs) is one of the top rising stars in the Mayweather Promotions’ stable. The 31-year-old from Cleveland, Ohio was an amateur standout who defeated Brandon Rios at the 2004 Olympic Trials but was forced to miss the Olympics because of a bout with pneumonia. Since then, Bey has put together an exceptional professional career, with only one loss at the hands of John Molina Jr. last July, and has risen to contender status in the lightweight division. The winner of his last two fights, including a dominating decision victory against Alan Herrera in his last fight, Bey is ready to fight on the biggest stage of his career.

Despite losing his last two fights, Alfredo Angulo (22-4, 18 KOs) remains a popular and extremely dangerous fighter, who is no doubt looking to take out his recent frustrations on his next opponent. The 31-year-old from Mexicali, Baja California, Mexico always produces exciting fights, as evidenced by knockouts of Gabriel Rosado, Joel Julio and Joachim Alcine, as well as his classic 2011 showdown with James Kirkland. Angulo’s last two defeats came at the hands of the top fighters in the 154-pound division in Canelo Alvarez and Erislandy Lara. Both fighters controversially stopped Angulo in the 10th round, but on Sept. 13 it is Angulo who plans on inflicting pain and walking out victorious.

Angulo’s opponent, James De La Rosa (22-2, 13 KOs) is looking to make his name in the sport with an explosive win on September 13. The 26-year-old Mexican fighting out of San Benito, Texas is fresh off of an August 2 technical knockout victory over Fabian Reyes. This win adds to a list of solid triumphs that includes Tyrone Brunson, Lenin Arroyo and Tim Coleman. Now he looks for his biggest victory and to be able to say he has arrived as one of the sport’s elite.

The two fighters kicking off the night on Mayweather vs. Maidana 2: COUNTDOWN LIVE are sure to make sparks fly in the ring as both look to rise in their divisional rankings. John Molina Jr. (27-4, 22 KOs) from Covina, Calif., is looking to bounce back from his loss to Lucas Matthysse in a fight that immediately jumped to the top of the Fight of the Year list. The 31-year-old owns an impressive knockout victory over Mickey Bey that proved you can never count the powerful puncher out of a fight.

Humberto Soto (64-8-2, 35 KOs) is riding a six-fight winning streak since a 2012 loss to Matthysse. A former titlist in three divisions, the 34-year-old from Los Mochis, Sinaloa, Mexico looks to stay hot and earn himself another shot at a world title with a big televised victory on Sept. 13.

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“MAYHEM: Mayweather vs. Maidana 2,” a 12-round world championship bout for Mayweather’s 147-pound world titles takes place Saturday, Sept. 13 at MGM Grand in Las Vegas and is promoted by Mayweather Promotions, Golden Boy Promotions and sponsored by Corona Extra, O’Reilly Auto Parts and “The Equalizer” in theaters September 26. The event will be produced and distributed live by SHOWTIME PPV® and is the fourth fight of a six-fight deal between Mayweather and Showtime Networks Inc.

Tickets for the live event are on sale now and are priced at $1,600, $1,200, $850, $600 and $350, not including applicable service charges and taxes. Tickets are limited to eight (8) per person with a limit of four (4) at the $350 price range. To charge by phone with a major credit card, call Ticketmaster at (800) 745-3000. Tickets also are available at www.mgmgrand.com or www.ticketmaster.com.